The Internet has revolutionized the way we obtain knowledge and this book makes full use of its potential to help students learn. We have made the process student-friendly by having all web sites that we mention in the book, a mouse-click away from this book's web site. (We also include all URLs in the textbook for those who wish to go directly to a site.) Within our web site we have Internet exercises to allow students to get the most out of appropriate sites as well as raise interest for independent, further exploration on a topic. We expect to add more sites and exercises to our web pages as we discover new ones after the book has gone to press. Our web site also features on-line quizzes to help a student succeed in a geology course.

The Good Earth by David McConnell, provides the student with an alternative, on-line textbook. Access to it is obtained through purchase of this textbook.